[PATCH v4 08/15] media: i2c: os05b10: add V4L2 digital gain control

[Tarang Raval]

Stop programming digital gain in the common register sequence and expose it as
a V4L2_CID_DIGITAL_GAIN control. Initialize the new control and handle writes
in the ctrl callback.

Signed-off-by: Tarang Raval <tarang.raval@xxxxxxxxxxxxxxxxx>
Reviewed-by: Mehdi Djait <mehdi.djait@xxxxxxxxxxxxxxx>
---
 drivers/media/i2c/os05b10.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/os05b10.c b/drivers/media/i2c/os05b10.c
index abcb7c766754..14046f1c9324 100644
--- a/drivers/media/i2c/os05b10.c
+++ b/drivers/media/i2c/os05b10.c
@@ -132,7 +132,6 @@ static const struct cci_reg_sequence os05b10_common_regs[] = {
 	{ CCI_REG8(0x3108), 0x7d },
 	{ CCI_REG8(0x3109), 0xfc },
 	{ CCI_REG8(0x3503), 0x88 },
-	{ OS05B10_REG_DIGITAL_GAIN, OS05B10_DIGITAL_GAIN_DEFAULT },
 	{ OS05B10_REG_ANALOG_GAIN_SHORT, 0x0080 },
 	{ OS05B10_REG_DIGITAL_GAIN_SHORT, 0x0400 },
 	{ OS05B10_REG_EXPOSURE_SHORT, 0x000020 },
@@ -543,6 +542,10 @@ static int os05b10_set_ctrl(struct v4l2_ctrl *ctrl)
 		ret = cci_write(os05b10->cci, OS05B10_REG_ANALOG_GAIN,
 				ctrl->val, NULL);
 		break;
+	case V4L2_CID_DIGITAL_GAIN:
+		ret = cci_write(os05b10->cci, OS05B10_REG_DIGITAL_GAIN,
+				ctrl->val, NULL);
+		break;
 	case V4L2_CID_EXPOSURE:
 		ret = cci_write(os05b10->cci, OS05B10_REG_EXPOSURE,
 				ctrl->val, NULL);
@@ -926,7 +929,7 @@ static int os05b10_init_controls(struct os05b10 *os05b10)
 	        return ret;
 
 	ctrl_hdlr = &os05b10->handler;
-	v4l2_ctrl_handler_init(ctrl_hdlr, 8);
+	v4l2_ctrl_handler_init(ctrl_hdlr, 9);
 
 	pixel_rate = os05b10_pixel_rate(os05b10, mode);
 	v4l2_ctrl_new_std(ctrl_hdlr, &os05b10_ctrl_ops, V4L2_CID_PIXEL_RATE,
@@ -960,6 +963,10 @@ static int os05b10_init_controls(struct os05b10 *os05b10)
 			  OS05B10_ANALOG_GAIN_MIN, OS05B10_ANALOG_GAIN_MAX,
 			  OS05B10_ANALOG_GAIN_STEP, OS05B10_ANALOG_GAIN_DEFAULT);
 
+	v4l2_ctrl_new_std(ctrl_hdlr, &os05b10_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
+	                  OS05B10_DIGITAL_GAIN_MIN, OS05B10_DIGITAL_GAIN_MAX,
+	                  OS05B10_DIGITAL_GAIN_STEP, OS05B10_DIGITAL_GAIN_DEFAULT);
+
 	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &os05b10_ctrl_ops,
 					      &props);
 	if (ret) {
-- 
2.34.1